lighting fixtures

Abstract

To provide a luminaire that can illuminate an appropriate range at the time of emergency lighting and can illuminate a wide range at the time of normal lighting.SOLUTION: A luminaire 10 comprises an appliance body 11, a battery, a main light source 12, and an emergency light source 13. The appliance body 11 comprises a front part 25 provided on the front upper side, and a slope part 26 provided in a slope shape obliquely backward from a lower end of the front part 25 on the front lower side. The battery is arranged in the appliance body 11. The main light source 12 is arranged on the front part 25 of the appliance body 11 and lit by an external power supply. The emergency light source 13 is arranged on the slope part 26 of the appliance body 11 and lit by power of the battery at the time of a power failure of the external power supply.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] FIELD OF THE INVENTION An embodiment of the present invention relates to a lighting fixture. [Background technology]

[0002] BACKGROUND ART Conventionally, in a staircase or the like, for example, a lighting fixture called a stair light is installed on the wall of a landing between an ascending staircase and a descending staircase.

[0003] This lighting fixture is an emergency lighting fixture that has an illumination light source that is turned on by an external power source and an emergency light source that is turned on by battery power in the event of a power outage in the external power source, and these illumination light source and emergency light source are arranged on the front side of the fixture body.

[0004] However, in this lighting fixture, the light from the lighting light source unit is sometimes blocked by the fixture itself, limiting the range of illumination. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-93122 Summary of the Invention [Problem to be solved by the invention]

[0006] The problem to be solved by the present invention is to provide a lighting fixture that can illuminate a wide range during normal lighting. [Means for solving the problem]

[0007] The lighting fixture of the embodiment includes an elongated fixture body having a rear portion, a light source mounting portion that is located in front of the rear portion and at the upper side when viewed from the front, and an inclined surface portion that is located in front of the rear portion and at the lower side when viewed from the front, an elongated main light source mounted on the light source mounting portion, emergency light sources disposed on both ends of the inclined surface portion in the longitudinal direction, and a lighting unit that is mounted on the rear portion, overlaps the inclined surface portion when viewed from the front, and is positioned between the emergency light source on one end side and the emergency light source on the other end side. a battery arranged above the inclined surface portion when viewed from the front; Equipped with. [Effects of the Invention]

[0008] According to the present invention, it is expected that an appropriate range will be illuminated during emergency lighting, and a wide range will be illuminated during normal lighting. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a perspective view of an illumination device according to an embodiment, as viewed from below. FIG. [Figure 2] FIG. 2 is a perspective view of the lighting fixture as viewed from above. [Figure 3] FIG. 2 is an exploded perspective view of the lighting fixture as viewed from above. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 2 is a light distribution diagram of the emergency light source of the lighting fixture. [Figure 7] 4 is a graph showing the luminous intensity distribution of the emergency light source of the same lighting fixture. [Figure 8] FIG. 2 is a side view of the lighting fixture in an installed state. [Figure 9] FIG. 2 is a plan view of the above lighting fixture in an installed state. DETAILED DESCRIPTION OF THE INVENTION

[0010] An embodiment will be described below with reference to FIGS.

[0011] 1 to 5 show lighting fixture 10. This lighting fixture 10 is a wall-mounted lighting fixture formed horizontally along its width direction, and is installed on the wall of an indoor staircase landing so that its width direction is horizontal, for example, and is used to illuminate the landing or staircase.

[0012] The lighting fixture 10 includes a fixture body 11, a main light source 12 and an emergency light source 13 as a secondary light source arranged on the front side of the fixture body 11, a terminal block 14 arranged inside the fixture body 11, a battery 15, a power supply unit 16, and a lighting unit 17.

[0013] The fixture body 11 is formed horizontally in the width direction, and includes a main body chassis 20, side panels 21 on both sides of the main body chassis 20 in the width direction (longitudinal direction), an upper front panel 22 extending from the upper front side of the main body chassis 20 to the top surface, and a lower front panel 23 extending from the lower front side of the main body chassis 20 to the lower surface and lower back side.

[0014] The back surface of the fixture body 11 is an installation surface 24 that is installed on a wall surface, a front surface 25 that is parallel to the installation surface 24 is provided on the upper front side of the fixture body 11, an inclined surface 26 that is inclined diagonally backward from the lower end of the front surface 25 is provided on the lower front side of the fixture body 11, and a lower surface 27 is provided on the lower surface of the fixture body 11 from the lower end of the inclined surface 26 toward the back side of the fixture body. The inclination angle of the inclined surface 26 with respect to the front surface 25 is, for example, 30°.

[0015] The main body chassis 20 has a back portion 28 that constitutes the installation surface 24, and upper and lower edge portions 29, 30 that are bent forward from the upper and lower edges of the back portion 28. The back portion 28 is formed with a lead-in hole 31 for drawing in a power line for supplying an external power source such as an AC power supply, and mounting holes 32. The upper and lower edge portions 29, 30 are related in that the lower edge portion 30 protrudes forward less than the upper edge portion 29.

[0016] The side plate 21 has a front frame portion 33 disposed on the front side of the appliance body 11 and bent.

[0017] The upper front panel 22 includes a front panel portion 34 disposed on the front side of the fixture body 11 and an upper panel portion 35 disposed on the upper surface of the fixture body 11, and these front panel portion 34 and upper panel portion 35 are integrally formed by bending. Contact portions 36 on which the main light source 12 is disposed are provided on the upper and lower edges of the front panel portion 34, and a recessed portion 37 recessed rearward is provided between these upper and lower contact portions 36. A pair of spring receiving fittings 38 for attaching the main light source 12 with a mounting spring are disposed in this recessed portion 37, and a wiring hole 39 is provided for passing wiring that electrically connects the main light source 12 and the power supply unit 16. The top plate portion 35 is provided with mounting holes 40 for fastening to the main body chassis 20 with screws.

[0018] Circular light source windows 41 in which the emergency light source 13 is disposed are formed near both widthwise ends of the inclined surface portion 26 of the lower front panel 23. An inspection window 42 through which part of the lighting unit 17 is visible is provided near the widthwise middle of the lower surface portion 27 of the lower front panel 23.

[0019] The main light source 12 is formed horizontally in the width direction, and includes a light-emitting module 45, a light source chassis 46 that arranges the light-emitting module 45 on the front side, a translucent cover 47 that covers the front side of the light-emitting module 45 and is arranged on the light source chassis 46, a diffusion cover 48 that covers the front side of the light-emitting module 45 and is arranged inside the translucent cover 47, and side covers 49 that are arranged on both ends of the translucent cover 47.

[0020] The light-emitting module 45 includes a horizontally long substrate 50 and a plurality of light-emitting elements 51 mounted along the longitudinal direction of the substrate 50. The light-emitting elements 51 may be, for example, LEDs, but other light-emitting elements such as organic EL may also be used.

[0021] The light source chassis 46 is long horizontally and has a substantially U-shaped cross section, and a substrate 50 of the light emitting module 45 is disposed on the front side.

[0022] The light-transmitting cover 47 is, for example, milky white and has light-transmitting and light-diffusing properties. The light-transmitting cover 47 is long horizontally, and has an opening 52 on the rear side along the width direction through which the light-emitting module 45 is inserted, and coupling portions 53 are provided at the upper and lower edges of the opening 52 to be coupled to the upper and lower edges of the light source chassis 46, and cover portions 54 are provided that protrude forward in a curved shape from the upper and lower coupling portions 53, and mounting portions 55 are provided in front of the upper and lower coupling portions 53 to which the diffusion cover 48 is attached.

[0023] The diffusion cover 48 is long horizontally, and its upper and lower edges are attached to the upper and lower mounting portions 55 of the light-transmitting cover 47, and the diffusion cover 48 is disposed inside the light-transmitting cover 47 so as to cover the front side of the light-emitting module 46. The diffusion cover 48 is, for example, transparent and has light-transmitting properties, and is formed with a plurality of prisms 56 for diffusing light from the light-emitting elements 51 in the vertical direction.

[0024] The main light source 12 is attached by engaging a pair of mounting springs (not shown) attached to the back side of the light source chassis 46 with the spring receiving metal fittings 38 on the fixture body 11 side, whereby the elastic force of the mounting springs pulls the main light source 12 into contact with the front side of the fixture body 11. Therefore, the main light source 12 can be removed from the fixture body 11 by moving the main light source 12 away from the fixture body 11 against the elastic force of the mounting springs and removing the mounting springs from the spring receiving metal fittings 38.

[0025] The emergency light sources 13 are disposed at two locations near both ends in the width direction of the inclined surface portion 26 of the fixture body 11. The emergency light sources 13 are disposed so that at least a portion thereof is located within the width direction range of the main light source 12, and in this embodiment, are disposed within the width direction range of the main light source 12 (see FIG. 5).

[0026] The emergency light source 13 includes a light emitting module 60 , a mounting member 61 for mounting the light emitting module 60 , a lens 62 facing the light emitting module 60 , and a lens holder 63 for holding the lens 62 to the mounting member 61 .

[0027] The light emitting module 60 includes, for example, a square substrate 64 and a light emitting element 65 mounted in the center of the substrate 64. The light emitting element 65 may be, for example, an LED, but other light emitting elements such as an organic EL may also be used.

[0028] The mounting member 61 is formed of, for example, a metal plate, and has one end attached to the back surface 28 of the fixture body 11, and the other end arranged parallel to the inner surface of the inclined surface 26 of the fixture body 11 and facing the light source window 41 of the inclined surface 26. A substrate 64 of the light-emitting module 60 is disposed on the other end of this mounting member 61, and the light-emitting element 65 of the light-emitting module 60 faces the light source window 41 of the inclined surface 26, with the optical axis perpendicular to the light-emitting surface of the light-emitting element 65 (hereinafter also referred to as the optical axis of the emergency light source 13) facing diagonally downward.

[0029] The lens 62 has a central lens portion 66 and a lens edge portion 67 around the lens portion 66. A concave surface portion 68 that is recessed to face the light emitting element 65 is provided on the inner surface side of the lens portion 66, and a convex surface portion 69 that protrudes forward is provided on the outer surface side of the lens portion 66. The lens portion 66 protrudes forward of the inclined surface portion 26 from the light source window 41 of the fixture body 11.

[0030] The lens holder 63 engages with the lens edge 67 of the lens 62 to position it, and holds the lens 62 on the mounting member 61 .

[0031] Fig. 6 shows a light distribution diagram of emergency light source 13, and Fig. 7 shows a graph of the luminous intensity distribution of emergency light source 13. The light distribution diagram in Fig. 6 shows vertical angles with the directly downward direction being a vertical angle of 0°, and the graph in Fig. 7 shows the relationship between vertical angle and luminous intensity. In Figs. 6 and 7, the solid curved line indicates light in the direction of a horizontal angle of 0° parallel to the optical axis of emergency light source 13 when viewed from a planar direction, the dot-dash line indicates light in the direction of a horizontal angle of 45° with respect to the optical axis of emergency light source 13 when viewed from a planar direction, and the dashed line indicates light in the direction of a horizontal angle of 90° with respect to the optical axis of emergency light source 13 when viewed from a planar direction.

[0032] Light at a horizontal angle of 0° is emitted toward a vertical angle range of 60 to 90° (more preferably, a vertical angle range of 70 to 80°), and the luminous intensity in this irradiation range is higher than the luminous intensity in other ranges. Furthermore, light at a horizontal angle of 0°, light at a horizontal angle of 45°, and light at a horizontal angle of 90° are emitted toward the vertical angle of 0° and also toward the negative side of the vertical angle of 0°, i.e., toward the wall on which lighting fixture 10 is installed.

[0033] Such light distribution characteristics of the emergency light source 13 are obtained by the fact that the emergency light source section 13 is arranged on the inclined surface section 26 of the fixture body 11, the optical axis of the emergency light source 13 is directed diagonally downward, and the emergency light source section 13 is equipped with a lens 62.

[0034] As shown in FIG. 3, the terminal block 14 is disposed on the rear surface 28 of the main body chassis 20, and is connected to a power line that supplies external power.

[0035] The battery 15 is a rechargeable storage battery, and is disposed on the rear surface 28 of the main body chassis 20.

[0036] In addition, the power supply unit 16 receives an external power supply such as an AC power supply supplied through the terminal block 14, converts it into a lighting power supply such as a DC power supply, and supplies it to the light-emitting module 45 of the main light source 12, thereby lighting the light-emitting element 51.

[0037] The lighting unit 17 receives an external power supply via the terminal block 14 and is also connected to the battery 15. The lighting unit 17 includes a power outage detection circuit that detects a power outage of the external power supply, a charging circuit that charges the battery 15 when the external power supply is supplied, and an emergency lighting circuit that supplies lighting power to the emergency light source 13 using the power supply from the battery 15 when the external power supply is out of power.

[0038] Furthermore, the lighting unit 17 includes an inspection section 70 that issues an instruction to inspect the emergency lighting including the emergency light source 13 and the battery 15, and an inspection circuit that executes an inspection mode in response to this inspection instruction.

[0039] The inspection unit 70 is disposed opposite the inspection window 42 on the underside 27 of the appliance body 11, and is equipped with a receiving unit that receives wireless signals such as infrared signals transmitted from a terminal such as an inspection remote control, a transmitting unit that transmits the inspection results to the terminal, an inspection switch for manually instructing an inspection, and a monitor lamp that displays the inspection results, etc.

[0040] 8 and 9 show an installation state of lighting fixture 10. Lighting fixture 10 is installed on wall surface 75 of landing 74 of indoor staircase 73 so that the width direction of lighting fixture 10 is horizontal.

[0041] During normal operation when external power is supplied to lighting fixture 10, power supply unit 16 converts the external power into a predetermined lighting power supply and supplies it to main light source 12. As a result, main light source 12 lights up and illuminates stairs 73 and landing 74.

[0042] The light from the light-emitting element 51 of the lit main light source 12 passes through the diffusion cover 48, is diffused over a wide range by the prism 56 of this diffusion cover 48, and is further diffused by passing through the translucent cover 47, and is irradiated over a wide range.

[0043] Of the light that passes through the translucent cover 47, some of the light that travels downward is irradiated onto the underside of the wall 75 and the floor of the landing 74 through the front side of the inclined surface portion 26 of the fixture body 11, which has the effect of brightening the area around the landing 74. If the inclined surface portion 26 were not present on the lower front side of the fixture body 11 and there was a flat surface continuous with the front surface portion 25, the light would be blocked by the lower front side of the fixture body 11, and the light would not be irradiated onto the underside of the wall 75 or the floor of the landing 74, making the area around the landing 74 dark.

[0044] Furthermore, during normal operation, the lighting unit 17 detects the supply of external power and therefore charges the battery 15 using the external power source, but keeps the emergency light source 13 turned off.

[0045] In the event of a power outage in which the supply of external power to lighting fixture 10 is cut off, lighting unit 17 detects the power outage of the external power supply, converts the power from battery 15 into a predetermined lighting power supply, and supplies it to emergency light source 13. Therefore, in the event of a power outage, main light source 12 is turned off, but emergency light source 13 is turned on, illuminating stairs 73 and landing 74.

[0046] Because emergency light source 13 is provided on inclined surface portion 26 of fixture body 11, the optical axis of emergency light source 13 is directed diagonally downward. Therefore, even if lighting fixture 10 is installed on the upper side of wall surface 75 of landing 74, it can illuminate an appropriate range, including stairs 73 and landing 74. If there were no inclined surface portion 26 on the lower front side of fixture body 11 and there was a flat surface continuous with front surface portion 25, the light from emergency light source 13 installed on that flat surface would be emitted mainly horizontally, and the vicinity of landing 74 and the staircase 73 on the descending side leading from this landing 74 to the lower floor would be darkened.

[0047] Moreover, the emergency light source 13 controls the distribution of light from the light emitting element 65 by the lens 62, so that the light distribution is controlled to project light toward the staircase 73, which is far from the installation location of the lighting fixture 10, thereby making the staircase 73 brighter.

[0048] In addition, the emergency light sources 13 are arranged at two locations on both ends of the fixture body 11, so that the side of the stairs 73 connecting the landing 74 to the upper floor and the side of the stairs 73 connecting the landing 74 to the lower floor can be properly illuminated.

[0049] Moreover, because the emergency light sources 13 are disposed within the widthwise region of the main light source 12, the distance between the two emergency light sources 13 is not too great, preventing the middle of the range illuminated by each of the two emergency light sources 13 from becoming dark and enabling illumination of an appropriate range. Furthermore, the lighting fixture 10 can be made smaller in width, and other devices such as a motion sensor can be disposed on both ends of the lighting fixture 10 in the widthwise direction.

[0050] In addition, a motion sensor may be installed in the lighting fixture 10, and the lighting of the main light source 12 may be automatically controlled so that the main light source 12 is turned off when the motion sensor does not detect a human body, and turned on when the motion sensor detects a human body.

[0051] Furthermore, lighting fixtures 10 are periodically inspected to ensure that their emergency light sources 13 are operating normally. When inspecting lighting fixtures 10, an operator operates a terminal below the lighting fixture 10 to be inspected and sends an inspection signal to the inspection unit 70 of the lighting fixture 10. When the inspection unit 70 receives the inspection signal from the terminal, the lighting unit 17 enters inspection mode, turns on the emergency light sources 13 using power from the battery 15, and determines the life of the battery 15. The inspection operation and the inspection results are displayed by a monitor lamp on the inspection unit 70. After the inspection is completed, the inspection unit 70 sends a signal of the inspection results to the terminal. The operator then visually checks the lighting status of the emergency light sources 13 and the monitor lamp, and also checks the inspection results received on the terminal to understand the status of the lighting fixture 10.

[0052] Inspection unit 70 is provided on underside 27 extending from the lower end of inclined surface 26 of fixture body 11 toward the rear side of fixture body 11, so that signals can be sent and received with the terminal only in the area below lighting fixture 10. As a result, since lighting fixtures 10 are installed at each landing 74 of each floor of staircase 73, it is possible to prevent lighting fixtures 10 other than the lighting fixture 10 being inspected from receiving inspection signals from the terminal and malfunctioning.

[0053] The emergency light source 13 may be provided at one location in the widthwise center of the inclined surface portion 26 of the fixture body 11, or may have a form having a continuous light-emitting surface along the widthwise direction of the inclined surface portion 26 of the fixture body 11.

[0054] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0055] 10 Lighting fixtures 11. Instrument body 12 Main light source 13 Emergency light source 15 Battery 25 Front part 26 Slope section 27 Bottom part 62 Lens 65 Light-emitting element 70 Inspection Department

Claims

[Claim 1] an elongated fixture main body having a rear portion, a light source attachment portion provided on the front side of the rear portion and on the upper side in front view, and an inclined surface portion provided on the front side of the rear portion and on the lower side in front view; an elongated main light source attached to the light source attachment portion; an emergency light source disposed on each of both longitudinal end sides of the inclined surface portion; a lighting unit attached to the rear surface portion, overlapping the inclined surface portion in the front view, and disposed at a position between the emergency light source on one end side and the emergency light source on the other end side; a battery disposed above the inclined surface portion in the front view; A lighting fixture equipped with

Images